Artificial pavement



(No Model.)

W. H. JENKINS.

ARTIFICIAL PAVEMENT. No. 374,124. Patented Nov. 29, 1887.

ATTORNEY UNITED STATES PATENT OFFICE.

WARNER II. JENKINS, OF PHILADELPHIA, PENNSYLVANIA.

ARTIFICIAL PAVEMENT.

SPECIFICATION forming part of Letters Patent No. 374,124, dated November 29, 1887.

Application filed May 18, 1887. a Serial No. 238,597. (Nomodel.)

To all whom t may concern:

Beit known that I, WARNER H. JENKINs, a citizen of the United States, residing at the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Artificial Pavements, of which the following is a full, clear, and eX act description, reference being had to the accompanying drawings, of which- Figure 1 is a plan view of a portion of my improved pavement. Fig. 2 is a vertical longitudinal section thereof. Fig. 3 shows a section of curbing with one part of my invention applied thereto.

The object of this invention is to provide a separate block artificial pavement which shall be unaffected by the action of frost or changes of temperature.

The invention consists in the combination, with the layers of cement composing an artiiicial pavement,of a chain interposed between said layers near the outer edges of the pavement, or the blocks of which the same is made up, whereby the layers are held firmly together and the cracking of the blocks (as was the case with the iron rods or frames hereto fore employed) by changes of temperature is greatly obviated; also,in the combination,with the separate blocks or curbs, of an iron chain or chains extending along the interior of the same from block to block, whereby the latter are firmly bound together, as hereinafter described.

Referring to the annexed drawings, A marks the pavement, which is composed of two layers of cement,a b,thelower layer,ct,being of the usual coarse cementic material and the upper or top layer, b,fofa fine, compact, and durable material. When the pavement is in a plastic state, it is cut into regular sections or blocks B, between which there is interposed a filling of crystal sand,or sand and powdered tar, or other suitable material that will prevent adhering or reuniting of the blocks, each block thus being independent and unaffected by the contraction or expansion of the other.

In orderl to bind the layers a b firmly togetherI interpose between the same, near the outer edges of each block, an iron chain, C, into the links of which enters the cement of the respective layers. Vhen the pavement hardens, the chain thus embedded between the layers thereof iirmly unites the latter, and it (said chain),cannotwork loose or contract and expand,and thus crack the pavexnent,as do the iron rods or frames heretofore employed for thepurpose of binding the layers.

As a means to bind together the sections or blocks el' of the curbing D, I extend along the interior thereof from blockto block one or more metal chains,E ,into whose links the cement enters and firmly binds tlie sections or blocks. The individual links of the chain or chains thus being filled with the cement, they cannot contract or expand sufciently to crack or split the pavement, which is the case with the usual bindingrbars heretofore used. l also sometimes likewise extend the chains through the several blocks of the pavement.

Having thus described my invention,l claim as new and wish to secure by Letters Patentl. In combination with an artificial cement pavement, a binding chain embedded in the several blocks of which the pavement is com posed, substantially as and for the purpose set forth.

2. In combination with an artificial cement pavement or curbi n g, a chain embedded therein so as to connect and bind together the several sections of which the pavement or curbing is composed, substantially as and for the purpose described.

In testimony whereof I have hereunto affixed my signature this lthdayof May, A. D. 1887. WARNER H. JENKINS.

Vituesses:

JN0. NOLAN, ANDREW ZANE, Jr. 

